Answer: Power is the ability to accomplish something chosen by the person who has the power or the authority. Freedom is the ability to do as one sees fit. It can be adversarial. Those with the most power tend to concede the least freedom to others. On the other hand, ordinary people can be empowered by freedom.
Basically, if you hold the balance of power, you have the liberty to choose what you want to do with it, good or bad. But mostly for the good unlike dictators.